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KR-102962800-B1 - SYSTEM FOR CALCULATING PORT UTILIZATION INDEX USING SATELLITE IMAGES AND METHOD THEREOF

KR102962800B1KR 102962800 B1KR102962800 B1KR 102962800B1KR-102962800-B1

Abstract

The present invention relates to a system (1) for calculating a port utilization index using satellite imagery and a method thereof, and more specifically, to a system (1) for calculating a port utilization index using satellite imagery and a method thereof, wherein after specifying a berth area (A1), an anchorage area (A2), and a storage yard area (A3) within the satellite imagery, a vessel (S) and a container (C) within the said areas (A1 to A3) are specified to derive a port utilization index, thereby enabling a user (e.g., a logistics company) to intuitively understand port congestion, etc.

Inventors

  • 김태호
  • 전호군
  • 김현수
  • 권재엽

Assignees

  • (주)유에스티21

Dates

Publication Date
20260511
Application Date
20250310

Claims (12)

  1. A preprocessing unit that performs preprocessing on received satellite images; A threshold setting unit for setting thresholds to identify ships and containers in berth areas, anchorage areas, and storage yard areas within satellite images specified through the above preprocessing unit; A detection unit that identifies ships and containers within satellite imagery using the above threshold value; and It includes an index calculation unit that calculates a port utilization index by utilizing the number of vessels specified within the berth area and anchorage area and the container area within the storage yard area; The above preprocessing unit It includes a first masking module for specifying a seawater area within a satellite image; and a third masking module for specifying a storage yard area and a nearby road area within a satellite image; and The above threshold setting unit A first setting module for setting a first threshold value for distinguishing seawater pixels and ship pixels within the berth area, using pixels of the seawater area specified in the satellite image specified by the first masking module as a sample; and a third setting module for setting a third threshold value for distinguishing container pixels within the storage yard area, using pixels of the nearby road area specified in the satellite image specified by the third masking module as a sample; comprising The above index calculation unit A first calculation module that calculates a berth utilization rate by considering the total number of available berths within the port and the number of berthed vessels within the port; a second calculation module that calculates a berth utilization rate by considering the total number of vessels that can be accommodated in the anchorage area and the total number of vessels within the anchorage area; and a third calculation module that calculates a storage yard utilization rate by considering the total area of the storage yard area and the total area of containers within the storage yard area; comprising The above-mentioned first setting module is A port utilization index calculation system using satellite imagery characterized by calculating a first threshold value using Equation (1) and Equation (2). (Equation (1) : Equation (2) : : Median MAD : Absolute Deviation of Median SF : Scale Factor)
  2. In paragraph 1, the pretreatment unit A system for calculating a port utilization index using satellite imagery, characterized by performing preprocessing on optical satellite imagery and SAR satellite imagery.
  3. In paragraph 1, the pretreatment unit A port utilization index calculation system utilizing satellite imagery, characterized by further including a second masking module for specifying an anchorage area within the satellite imagery.
  4. In paragraph 3, the above pretreatment unit A port utilization index calculation system utilizing satellite imagery, further comprising a speckle removal module for removing speckles within a SAR image of an anchorage area specified by the second masking module.
  5. delete
  6. In paragraph 4, the threshold setting unit A port utilization index calculation system utilizing satellite imagery, further comprising: a second setting module for setting a second threshold value for distinguishing ship pixels located in an anchorage area within the satellite image specified by the second masking module.
  7. delete
  8. In paragraph 6, the detection unit A first specifying module that specifies ship pixels within the berth area of a satellite image based on the first threshold value; and It includes a second specifying module that specifies ship pixels within the anchorage area of the satellite image based on the second threshold value; A port utilization index calculation system utilizing satellite imagery, further comprising: a clustering unit that specifies the total number of vessels within a berth area and an anchorage area through vessel pixels specified within the satellite imagery through the first specific module and the second specific module.
  9. In paragraph 8, the clustering part A port utilization index calculation system utilizing satellite imagery, characterized by including a clustering module that performs clustering of ship pixels specified within the satellite imagery through the first specific module and the second specific module.
  10. In paragraph 9, the above-mentioned clustering part A port utilization index calculation system utilizing satellite imagery, further comprising a centroid derivation module that derives the centroid of individual vessels clustered through the clustering module.
  11. delete
  12. In paragraph 1, the index calculation unit A port utilization index calculation system utilizing satellite imagery, further comprising an index calculation module that calculates a port utilization index by considering the above-mentioned berth utilization rate, anchorage utilization rate, and storage yard utilization rate, and weights.

Description

System for Calculating Port Utilization Index Using Satellite Images and Method Thereof The present invention relates to a system (1) for calculating a port utilization index using satellite imagery and a method thereof, and more specifically, to a system (1) for calculating a port utilization index using satellite imagery and a method thereof, wherein after specifying a berth area (A1), an anchorage area (A2), and a storage yard area (A3) within the satellite imagery, a vessel (S) and a container (C) within the said areas (A1 to A3) are specified to derive a port utilization index, thereby enabling a user (e.g., a logistics company) to intuitively understand port congestion, etc. In modern society, more than 80% of global trade is conducted via maritime transport. According to a report by the UN Conference on Trade and Development (UNCTAD), global maritime logistics volume in 2023 was 12.2 billion tons, a 2.4% increase from the previous year, 2022. International trade ports play a pivotal role in maritime trade. As of 2023, Korea possesses an annual port handling capacity of approximately 1.39 billion tons, occupying a strategically important position capable of handling 99.8% of domestic import and export cargo. Furthermore, the shipping balance generated by ports accounts for approximately 31% of the domestic service balance. As such, ports contribute to international logistics, and indicators of port operations can be derived from cargo volume, vessel capacity, cargo handling capacity, and the occupancy time of cargo handling facilities by vessels. In this regard, the inventors of the present invention intend to present a system and method for calculating a port utilization index using novel satellite imagery, and details thereof will be described below. FIG. 1 is a conceptual diagram of a port utilization index calculation system using satellite imagery according to an embodiment of the present invention; FIG. 2 is a block diagram of a preprocessing unit according to FIG. 1; FIG. 3 is a reference diagram for explaining a first masking module according to FIG. 2; FIG. 4 is a reference diagram for explaining a second masking module according to FIG. 2; FIG. 5 is a reference diagram for explaining the third masking module according to FIG. 2. FIG. 6 is a block diagram of a threshold setting unit according to FIG. 1; FIG. 7 is a block diagram of a detection unit according to FIG. 1; FIG. 8 is a block diagram of a clustering unit according to FIG. 1; FIG. 9 is a reference diagram for explaining the clustering section according to FIG. 8; FIG. 10 is a block diagram of an index calculation unit according to FIG. 1; FIG. 11 is a flowchart of a method for calculating a port utilization index using satellite imagery according to an embodiment of the present invention; FIG. 12 is a flowchart for step S10 according to FIG. 11; FIG. 13 is a flowchart for step S30 according to FIG. 11; FIG. 14 is a flowchart for step S50 according to FIG. 11; FIG. 15 is a flowchart for step S70 according to FIG. 11; FIG. 16 is a flowchart for step S90 according to FIG. 11. Hereinafter, embodiments of the present invention will be described in more detail with reference to the accompanying drawings. Embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be interpreted as being limited to the embodiments below, but should be interpreted based on the matters described in the claims. Furthermore, these embodiments are provided merely for reference to more completely explain the present invention to those with average knowledge in the art. As used herein, the singular form may include the plural form unless the context clearly indicates otherwise. Additionally, as used herein, “comprise” and/or “comprising” specify the presence of the mentioned features, numbers, steps, actions, parts, elements, and/or groups thereof, and do not exclude the presence or addition of one or more other features, numbers, actions, parts, elements, and/or groups. In this specification, it should be noted that individual components may be formed integrally or independently as needed, and there are no separate limitations thereon. FIG. 1 is a conceptual diagram of a port utilization index calculation system using satellite imagery according to one embodiment of the present invention. Hereinafter, a port utilization index calculation system (1) utilizing satellite imagery according to an embodiment of the present invention will be described in detail with reference to the attached drawings. Referring to FIG. 1, the present invention relates to a port utilization index calculation system (1) utilizing satellite imagery, and more specifically, to a port utilization index calculation system (1) utilizing satellite imagery that allows a user (e.g., a logistics company) to intuitively understand port congestion, etc. by specifying a berth area (A1), an anchorage area (A2), and a storage yard area (A3) w